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Stockholders' Equity - Stock Options and Warrants (Details) - USD ($) | 6 Months Ended | 9 Months Ended | 12 Months Ended
--- | --- | --- | ---
Jun. 30, 2023 | Sep. 30, 2023 | Dec. 31, 2022
Stock Options, Shares |  |  |
Options, Outstanding, Beginning of Period (in shares) | 1,391,352 | 1,391,352 |
Options, Granted (in shares) |  | 180,896 |
Options, Exercised (in shares) | (1,227,776) | (82,500) |
Options, Forfeited (in shares) |  | (144,594) |
Options, Expired (in shares) |  | (24,603) |
Options, Outstanding, End of Period (in shares) |  | 1,320,551 | 1,391,352
Options, Vested and expected to vest (in shares) |  | 1,316,134 |
Options, Vested (in shares) |  | 1,229,103 |
Stock Options, Weighted Average Exercise Price |  |  |
Options, Outstanding. Beginning of Period (in dollars per share) | $ 10.83 | $ 10.83 |
Options, Granted (in dollars per share) |  | 3.46 |
Options, Exercised (in dollars per share) |  | 1.88 |
Options, Forfeited (in dollars per share) |  | 3.63 |
Options, Expired (in dollars per share) |  | 29.60 |
Options, Outstanding, End of Period (in dollars per share) |  | 10.82 | $ 10.83
Options, Vested and expected to vest (in dollars per share) |  | 10.84 |
Options, Vested (in dollars per share) |  | $ 11.25 |
Stock Options, Weighted Average Contractual Term and Intrinsic Value |  |  |
Options, Outstanding, Weighted Average Remaining Contractual Term |  | 6 years 3 months 18 days | 7 years 10 days
Options, Vested and expected to vest, Weighted Average Remaining Contractual Term |  | 6 years 3 months 14 days |
Options, Vested, Weighted Average Remaining Contractual Term |  | 6 years 1 month 2 days |
Options, Outstanding, Aggregate Intrinsic Value |  | $ 78,700 | $ 187,600
Options, Vested and expected to vest, Aggregate Intrinsic Value |  | 78,700 |
Options, Vested, Aggregate Intrinsic Value |  | $ 78,200 |
Warrants, Shares |  |  |
Warrants, Outstanding, Beginning of Period (in shares) | 1,423,774 | 1,423,774 |
Warrants, Granted (in shares) |  | 0 |
Warrants, Exercised (in shares) |  | 0 |
Warrants, Forfeited (in shares) |  | 0 |
Warrants, Expired (in shares) |  | (2,000) |
Warrants, Outstanding, End of Period (in shares) |  | 1,421,744 | 1,423,774
Warrants, Vested and expected to vest (in shares) |  | 1,421,744 |
Warrants, Vested (in shares) |  | 1,421,744 |
Warrants, Weighted Average Exercise Price |  |  |
Warrants Outstanding, Beginning of Period (in dollars per share) | $ 42.57 | $ 42.57 |
Warrants, Granted (in dollars per share) |  | 0 |
Warrants, Exercised (in dollars per share) |  | 0 |
Warrants, Forfeited (in dollars per share) |  | 0 |
Warrants, Expired (in dollars per share) |  | 88.35 |
Warrants Outstanding, End of Period (in dollars per share) |  | 42.51 | $ 42.57
Warrants, Weighted Average Exercise Price, Vested or expected to vest in the future (in dollars per share) |  | 42.51 |
Warrants, Vested, Weighted Average Exercise Price (in dollars per share) |  | $ 42.51 |
Warrants, Weighted Average Contractual Term and Intrinsic Value |  |  |
Warrants, Outstanding, Weighted Average Remaining Contractual Term |  | 2 years 8 months 1 day | 3 years 4 months 13 days
Warrants, Vested and expected to vest, Weighted Average Remaining Contractual Term |  | 2 years 8 months 1 day |
Warrants, Vested, Weighted Average Remaining Contractual Term |  | 2 years 8 months 1 day |
Warrants Outstanding, Aggregate Intrinsic Value |  | $ 0 | $ 0
Warrants, Vested and expected to vest, Aggregate Intrinsic Value |  | 0 |
Warrants, Vested, Aggregate Intrinsic Value |  | $ 0 |

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